Commit | Line | Data |
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a509050b CL |
1 | /* |
2 | * In-kernel rpcbind client supporting versions 2, 3, and 4 of the rpcbind | |
3 | * protocol | |
4 | * | |
5 | * Based on RFC 1833: "Binding Protocols for ONC RPC Version 2" and | |
6 | * RFC 3530: "Network File System (NFS) version 4 Protocol" | |
7 | * | |
8 | * Original: Gilles Quillard, Bull Open Source, 2005 <gilles.quillard@bull.net> | |
9 | * Updated: Chuck Lever, Oracle Corporation, 2007 <chuck.lever@oracle.com> | |
10 | * | |
11 | * Descended from net/sunrpc/pmap_clnt.c, | |
12 | * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de> | |
13 | */ | |
14 | ||
cce63cd6 CL |
15 | #include <linux/module.h> |
16 | ||
a509050b CL |
17 | #include <linux/types.h> |
18 | #include <linux/socket.h> | |
d5b64430 CL |
19 | #include <linux/in.h> |
20 | #include <linux/in6.h> | |
a509050b CL |
21 | #include <linux/kernel.h> |
22 | #include <linux/errno.h> | |
c526611d | 23 | #include <linux/mutex.h> |
5a0e3ad6 | 24 | #include <linux/slab.h> |
9d548b9c | 25 | #include <net/ipv6.h> |
a509050b CL |
26 | |
27 | #include <linux/sunrpc/clnt.h> | |
28 | #include <linux/sunrpc/sched.h> | |
0896a725 | 29 | #include <linux/sunrpc/xprtsock.h> |
a509050b CL |
30 | |
31 | #ifdef RPC_DEBUG | |
32 | # define RPCDBG_FACILITY RPCDBG_BIND | |
33 | #endif | |
34 | ||
35 | #define RPCBIND_PROGRAM (100000u) | |
36 | #define RPCBIND_PORT (111u) | |
37 | ||
fc200e79 CL |
38 | #define RPCBVERS_2 (2u) |
39 | #define RPCBVERS_3 (3u) | |
40 | #define RPCBVERS_4 (4u) | |
41 | ||
a509050b CL |
42 | enum { |
43 | RPCBPROC_NULL, | |
44 | RPCBPROC_SET, | |
45 | RPCBPROC_UNSET, | |
46 | RPCBPROC_GETPORT, | |
47 | RPCBPROC_GETADDR = 3, /* alias for GETPORT */ | |
48 | RPCBPROC_DUMP, | |
49 | RPCBPROC_CALLIT, | |
50 | RPCBPROC_BCAST = 5, /* alias for CALLIT */ | |
51 | RPCBPROC_GETTIME, | |
52 | RPCBPROC_UADDR2TADDR, | |
53 | RPCBPROC_TADDR2UADDR, | |
54 | RPCBPROC_GETVERSADDR, | |
55 | RPCBPROC_INDIRECT, | |
56 | RPCBPROC_GETADDRLIST, | |
57 | RPCBPROC_GETSTAT, | |
58 | }; | |
59 | ||
60 | #define RPCB_HIGHPROC_2 RPCBPROC_CALLIT | |
61 | #define RPCB_HIGHPROC_3 RPCBPROC_TADDR2UADDR | |
62 | #define RPCB_HIGHPROC_4 RPCBPROC_GETSTAT | |
63 | ||
a509050b CL |
64 | /* |
65 | * r_owner | |
66 | * | |
67 | * The "owner" is allowed to unset a service in the rpcbind database. | |
126e4bc3 CL |
68 | * |
69 | * For AF_LOCAL SET/UNSET requests, rpcbind treats this string as a | |
70 | * UID which it maps to a local user name via a password lookup. | |
71 | * In all other cases it is ignored. | |
72 | * | |
73 | * For SET/UNSET requests, user space provides a value, even for | |
74 | * network requests, and GETADDR uses an empty string. We follow | |
75 | * those precedents here. | |
a509050b | 76 | */ |
126e4bc3 | 77 | #define RPCB_OWNER_STRING "0" |
a509050b CL |
78 | #define RPCB_MAXOWNERLEN sizeof(RPCB_OWNER_STRING) |
79 | ||
0b10bf5e CL |
80 | /* |
81 | * XDR data type sizes | |
82 | */ | |
83 | #define RPCB_program_sz (1) | |
84 | #define RPCB_version_sz (1) | |
85 | #define RPCB_protocol_sz (1) | |
86 | #define RPCB_port_sz (1) | |
87 | #define RPCB_boolean_sz (1) | |
88 | ||
89 | #define RPCB_netid_sz (1 + XDR_QUADLEN(RPCBIND_MAXNETIDLEN)) | |
90 | #define RPCB_addr_sz (1 + XDR_QUADLEN(RPCBIND_MAXUADDRLEN)) | |
91 | #define RPCB_ownerstring_sz (1 + XDR_QUADLEN(RPCB_MAXOWNERLEN)) | |
92 | ||
93 | /* | |
94 | * XDR argument and result sizes | |
95 | */ | |
96 | #define RPCB_mappingargs_sz (RPCB_program_sz + RPCB_version_sz + \ | |
97 | RPCB_protocol_sz + RPCB_port_sz) | |
98 | #define RPCB_getaddrargs_sz (RPCB_program_sz + RPCB_version_sz + \ | |
99 | RPCB_netid_sz + RPCB_addr_sz + \ | |
100 | RPCB_ownerstring_sz) | |
101 | ||
102 | #define RPCB_getportres_sz RPCB_port_sz | |
103 | #define RPCB_setres_sz RPCB_boolean_sz | |
104 | ||
105 | /* | |
106 | * Note that RFC 1833 does not put any size restrictions on the | |
107 | * address string returned by the remote rpcbind database. | |
108 | */ | |
109 | #define RPCB_getaddrres_sz RPCB_addr_sz | |
110 | ||
a509050b | 111 | static void rpcb_getport_done(struct rpc_task *, void *); |
381ba74a | 112 | static void rpcb_map_release(void *data); |
7f4adeff | 113 | static struct rpc_program rpcb_program; |
a509050b | 114 | |
c526611d CL |
115 | static struct rpc_clnt * rpcb_local_clnt; |
116 | static struct rpc_clnt * rpcb_local_clnt4; | |
117 | ||
a509050b CL |
118 | struct rpcbind_args { |
119 | struct rpc_xprt * r_xprt; | |
120 | ||
121 | u32 r_prog; | |
122 | u32 r_vers; | |
123 | u32 r_prot; | |
124 | unsigned short r_port; | |
86d61d86 TM |
125 | const char * r_netid; |
126 | const char * r_addr; | |
127 | const char * r_owner; | |
381ba74a TM |
128 | |
129 | int r_status; | |
a509050b CL |
130 | }; |
131 | ||
132 | static struct rpc_procinfo rpcb_procedures2[]; | |
133 | static struct rpc_procinfo rpcb_procedures3[]; | |
c2e1b09f | 134 | static struct rpc_procinfo rpcb_procedures4[]; |
a509050b | 135 | |
d5b64430 | 136 | struct rpcb_info { |
fc200e79 | 137 | u32 rpc_vers; |
a509050b | 138 | struct rpc_procinfo * rpc_proc; |
d5b64430 CL |
139 | }; |
140 | ||
141 | static struct rpcb_info rpcb_next_version[]; | |
142 | static struct rpcb_info rpcb_next_version6[]; | |
a509050b | 143 | |
a509050b | 144 | static const struct rpc_call_ops rpcb_getport_ops = { |
a509050b CL |
145 | .rpc_call_done = rpcb_getport_done, |
146 | .rpc_release = rpcb_map_release, | |
147 | }; | |
148 | ||
149 | static void rpcb_wake_rpcbind_waiters(struct rpc_xprt *xprt, int status) | |
150 | { | |
151 | xprt_clear_binding(xprt); | |
152 | rpc_wake_up_status(&xprt->binding, status); | |
153 | } | |
154 | ||
381ba74a TM |
155 | static void rpcb_map_release(void *data) |
156 | { | |
157 | struct rpcbind_args *map = data; | |
158 | ||
159 | rpcb_wake_rpcbind_waiters(map->r_xprt, map->r_status); | |
160 | xprt_put(map->r_xprt); | |
ba809130 | 161 | kfree(map->r_addr); |
381ba74a TM |
162 | kfree(map); |
163 | } | |
164 | ||
cc5598b7 CL |
165 | static const struct sockaddr_in rpcb_inaddr_loopback = { |
166 | .sin_family = AF_INET, | |
167 | .sin_addr.s_addr = htonl(INADDR_LOOPBACK), | |
168 | .sin_port = htons(RPCBIND_PORT), | |
169 | }; | |
170 | ||
c526611d CL |
171 | static DEFINE_MUTEX(rpcb_create_local_mutex); |
172 | ||
173 | /* | |
174 | * Returns zero on success, otherwise a negative errno value | |
175 | * is returned. | |
176 | */ | |
177 | static int rpcb_create_local(void) | |
cc5598b7 CL |
178 | { |
179 | struct rpc_create_args args = { | |
2a76b3bf | 180 | .protocol = XPRT_TRANSPORT_TCP, |
5a462115 CL |
181 | .address = (struct sockaddr *)&rpcb_inaddr_loopback, |
182 | .addrsize = sizeof(rpcb_inaddr_loopback), | |
cc5598b7 CL |
183 | .servername = "localhost", |
184 | .program = &rpcb_program, | |
c526611d | 185 | .version = RPCBVERS_2, |
cc5598b7 CL |
186 | .authflavor = RPC_AUTH_UNIX, |
187 | .flags = RPC_CLNT_CREATE_NOPING, | |
188 | }; | |
c526611d CL |
189 | struct rpc_clnt *clnt, *clnt4; |
190 | int result = 0; | |
191 | ||
192 | if (rpcb_local_clnt) | |
193 | return result; | |
194 | ||
195 | mutex_lock(&rpcb_create_local_mutex); | |
196 | if (rpcb_local_clnt) | |
197 | goto out; | |
198 | ||
199 | clnt = rpc_create(&args); | |
200 | if (IS_ERR(clnt)) { | |
201 | dprintk("RPC: failed to create local rpcbind " | |
202 | "client (errno %ld).\n", PTR_ERR(clnt)); | |
203 | result = -PTR_ERR(clnt); | |
204 | goto out; | |
205 | } | |
cc5598b7 | 206 | |
c526611d CL |
207 | /* |
208 | * This results in an RPC ping. On systems running portmapper, | |
209 | * the v4 ping will fail. Proceed anyway, but disallow rpcb | |
210 | * v4 upcalls. | |
211 | */ | |
212 | clnt4 = rpc_bind_new_program(clnt, &rpcb_program, RPCBVERS_4); | |
213 | if (IS_ERR(clnt4)) { | |
214 | dprintk("RPC: failed to create local rpcbind v4 " | |
215 | "cleint (errno %ld).\n", PTR_ERR(clnt4)); | |
216 | clnt4 = NULL; | |
217 | } | |
218 | ||
219 | rpcb_local_clnt = clnt; | |
220 | rpcb_local_clnt4 = clnt4; | |
221 | ||
222 | out: | |
223 | mutex_unlock(&rpcb_create_local_mutex); | |
224 | return result; | |
cc5598b7 CL |
225 | } |
226 | ||
a509050b | 227 | static struct rpc_clnt *rpcb_create(char *hostname, struct sockaddr *srvaddr, |
423d8b06 | 228 | size_t salen, int proto, u32 version) |
a509050b CL |
229 | { |
230 | struct rpc_create_args args = { | |
231 | .protocol = proto, | |
232 | .address = srvaddr, | |
9f6ad26d | 233 | .addrsize = salen, |
a509050b CL |
234 | .servername = hostname, |
235 | .program = &rpcb_program, | |
236 | .version = version, | |
237 | .authflavor = RPC_AUTH_UNIX, | |
423d8b06 CL |
238 | .flags = (RPC_CLNT_CREATE_NOPING | |
239 | RPC_CLNT_CREATE_NONPRIVPORT), | |
a509050b CL |
240 | }; |
241 | ||
d5b64430 CL |
242 | switch (srvaddr->sa_family) { |
243 | case AF_INET: | |
244 | ((struct sockaddr_in *)srvaddr)->sin_port = htons(RPCBIND_PORT); | |
245 | break; | |
246 | case AF_INET6: | |
247 | ((struct sockaddr_in6 *)srvaddr)->sin6_port = htons(RPCBIND_PORT); | |
248 | break; | |
249 | default: | |
250 | return NULL; | |
251 | } | |
252 | ||
a509050b CL |
253 | return rpc_create(&args); |
254 | } | |
255 | ||
c526611d | 256 | static int rpcb_register_call(struct rpc_clnt *clnt, struct rpc_message *msg) |
babe80eb | 257 | { |
14aeb211 | 258 | int result, error = 0; |
babe80eb | 259 | |
14aeb211 | 260 | msg->rpc_resp = &result; |
babe80eb | 261 | |
2a76b3bf | 262 | error = rpc_call_sync(clnt, msg, RPC_TASK_SOFTCONN); |
14aeb211 | 263 | if (error < 0) { |
363f724c | 264 | dprintk("RPC: failed to contact local rpcbind " |
babe80eb | 265 | "server (errno %d).\n", -error); |
14aeb211 CL |
266 | return error; |
267 | } | |
268 | ||
db820d63 | 269 | if (!result) |
14aeb211 | 270 | return -EACCES; |
14aeb211 | 271 | return 0; |
babe80eb CL |
272 | } |
273 | ||
a509050b CL |
274 | /** |
275 | * rpcb_register - set or unset a port registration with the local rpcbind svc | |
276 | * @prog: RPC program number to bind | |
277 | * @vers: RPC version number to bind | |
c2e1b09f | 278 | * @prot: transport protocol to register |
a509050b | 279 | * @port: port value to register |
14aeb211 CL |
280 | * |
281 | * Returns zero if the registration request was dispatched successfully | |
282 | * and the rpcbind daemon returned success. Otherwise, returns an errno | |
283 | * value that reflects the nature of the error (request could not be | |
284 | * dispatched, timed out, or rpcbind returned an error). | |
c2e1b09f CL |
285 | * |
286 | * RPC services invoke this function to advertise their contact | |
287 | * information via the system's rpcbind daemon. RPC services | |
288 | * invoke this function once for each [program, version, transport] | |
289 | * tuple they wish to advertise. | |
290 | * | |
291 | * Callers may also unregister RPC services that are no longer | |
292 | * available by setting the passed-in port to zero. This removes | |
293 | * all registered transports for [program, version] from the local | |
294 | * rpcbind database. | |
295 | * | |
c2e1b09f CL |
296 | * This function uses rpcbind protocol version 2 to contact the |
297 | * local rpcbind daemon. | |
298 | * | |
299 | * Registration works over both AF_INET and AF_INET6, and services | |
300 | * registered via this function are advertised as available for any | |
301 | * address. If the local rpcbind daemon is listening on AF_INET6, | |
302 | * services registered via this function will be advertised on | |
303 | * IN6ADDR_ANY (ie available for all AF_INET and AF_INET6 | |
304 | * addresses). | |
a509050b | 305 | */ |
14aeb211 | 306 | int rpcb_register(u32 prog, u32 vers, int prot, unsigned short port) |
a509050b | 307 | { |
a509050b CL |
308 | struct rpcbind_args map = { |
309 | .r_prog = prog, | |
310 | .r_vers = vers, | |
311 | .r_prot = prot, | |
312 | .r_port = port, | |
313 | }; | |
314 | struct rpc_message msg = { | |
a509050b | 315 | .rpc_argp = &map, |
a509050b | 316 | }; |
c526611d CL |
317 | int error; |
318 | ||
319 | error = rpcb_create_local(); | |
320 | if (error) | |
321 | return error; | |
a509050b CL |
322 | |
323 | dprintk("RPC: %sregistering (%u, %u, %d, %u) with local " | |
324 | "rpcbind\n", (port ? "" : "un"), | |
325 | prog, vers, prot, port); | |
326 | ||
babe80eb CL |
327 | msg.rpc_proc = &rpcb_procedures2[RPCBPROC_UNSET]; |
328 | if (port) | |
329 | msg.rpc_proc = &rpcb_procedures2[RPCBPROC_SET]; | |
a509050b | 330 | |
c526611d | 331 | return rpcb_register_call(rpcb_local_clnt, &msg); |
a509050b CL |
332 | } |
333 | ||
c2e1b09f CL |
334 | /* |
335 | * Fill in AF_INET family-specific arguments to register | |
336 | */ | |
1673d0de CL |
337 | static int rpcb_register_inet4(const struct sockaddr *sap, |
338 | struct rpc_message *msg) | |
c2e1b09f | 339 | { |
3aba4553 | 340 | const struct sockaddr_in *sin = (const struct sockaddr_in *)sap; |
c2e1b09f | 341 | struct rpcbind_args *map = msg->rpc_argp; |
3aba4553 | 342 | unsigned short port = ntohs(sin->sin_port); |
ba809130 | 343 | int result; |
c2e1b09f | 344 | |
ba809130 | 345 | map->r_addr = rpc_sockaddr2uaddr(sap); |
c2e1b09f CL |
346 | |
347 | dprintk("RPC: %sregistering [%u, %u, %s, '%s'] with " | |
348 | "local rpcbind\n", (port ? "" : "un"), | |
349 | map->r_prog, map->r_vers, | |
350 | map->r_addr, map->r_netid); | |
351 | ||
352 | msg->rpc_proc = &rpcb_procedures4[RPCBPROC_UNSET]; | |
353 | if (port) | |
354 | msg->rpc_proc = &rpcb_procedures4[RPCBPROC_SET]; | |
355 | ||
c526611d | 356 | result = rpcb_register_call(rpcb_local_clnt4, msg); |
ba809130 CL |
357 | kfree(map->r_addr); |
358 | return result; | |
c2e1b09f CL |
359 | } |
360 | ||
361 | /* | |
362 | * Fill in AF_INET6 family-specific arguments to register | |
363 | */ | |
1673d0de CL |
364 | static int rpcb_register_inet6(const struct sockaddr *sap, |
365 | struct rpc_message *msg) | |
c2e1b09f | 366 | { |
3aba4553 | 367 | const struct sockaddr_in6 *sin6 = (const struct sockaddr_in6 *)sap; |
c2e1b09f | 368 | struct rpcbind_args *map = msg->rpc_argp; |
3aba4553 | 369 | unsigned short port = ntohs(sin6->sin6_port); |
ba809130 | 370 | int result; |
c2e1b09f | 371 | |
ba809130 | 372 | map->r_addr = rpc_sockaddr2uaddr(sap); |
c2e1b09f CL |
373 | |
374 | dprintk("RPC: %sregistering [%u, %u, %s, '%s'] with " | |
375 | "local rpcbind\n", (port ? "" : "un"), | |
376 | map->r_prog, map->r_vers, | |
377 | map->r_addr, map->r_netid); | |
378 | ||
379 | msg->rpc_proc = &rpcb_procedures4[RPCBPROC_UNSET]; | |
380 | if (port) | |
381 | msg->rpc_proc = &rpcb_procedures4[RPCBPROC_SET]; | |
382 | ||
c526611d | 383 | result = rpcb_register_call(rpcb_local_clnt4, msg); |
ba809130 CL |
384 | kfree(map->r_addr); |
385 | return result; | |
c2e1b09f CL |
386 | } |
387 | ||
1673d0de CL |
388 | static int rpcb_unregister_all_protofamilies(struct rpc_message *msg) |
389 | { | |
390 | struct rpcbind_args *map = msg->rpc_argp; | |
391 | ||
392 | dprintk("RPC: unregistering [%u, %u, '%s'] with " | |
393 | "local rpcbind\n", | |
394 | map->r_prog, map->r_vers, map->r_netid); | |
395 | ||
396 | map->r_addr = ""; | |
397 | msg->rpc_proc = &rpcb_procedures4[RPCBPROC_UNSET]; | |
398 | ||
c526611d | 399 | return rpcb_register_call(rpcb_local_clnt4, msg); |
1673d0de CL |
400 | } |
401 | ||
c2e1b09f CL |
402 | /** |
403 | * rpcb_v4_register - set or unset a port registration with the local rpcbind | |
404 | * @program: RPC program number of service to (un)register | |
405 | * @version: RPC version number of service to (un)register | |
406 | * @address: address family, IP address, and port to (un)register | |
407 | * @netid: netid of transport protocol to (un)register | |
14aeb211 CL |
408 | * |
409 | * Returns zero if the registration request was dispatched successfully | |
410 | * and the rpcbind daemon returned success. Otherwise, returns an errno | |
411 | * value that reflects the nature of the error (request could not be | |
412 | * dispatched, timed out, or rpcbind returned an error). | |
c2e1b09f CL |
413 | * |
414 | * RPC services invoke this function to advertise their contact | |
415 | * information via the system's rpcbind daemon. RPC services | |
416 | * invoke this function once for each [program, version, address, | |
417 | * netid] tuple they wish to advertise. | |
418 | * | |
1673d0de CL |
419 | * Callers may also unregister RPC services that are registered at a |
420 | * specific address by setting the port number in @address to zero. | |
421 | * They may unregister all registered protocol families at once for | |
422 | * a service by passing a NULL @address argument. If @netid is "" | |
423 | * then all netids for [program, version, address] are unregistered. | |
c2e1b09f | 424 | * |
c2e1b09f CL |
425 | * This function uses rpcbind protocol version 4 to contact the |
426 | * local rpcbind daemon. The local rpcbind daemon must support | |
427 | * version 4 of the rpcbind protocol in order for these functions | |
428 | * to register a service successfully. | |
429 | * | |
430 | * Supported netids include "udp" and "tcp" for UDP and TCP over | |
431 | * IPv4, and "udp6" and "tcp6" for UDP and TCP over IPv6, | |
432 | * respectively. | |
433 | * | |
434 | * The contents of @address determine the address family and the | |
435 | * port to be registered. The usual practice is to pass INADDR_ANY | |
436 | * as the raw address, but specifying a non-zero address is also | |
437 | * supported by this API if the caller wishes to advertise an RPC | |
438 | * service on a specific network interface. | |
439 | * | |
440 | * Note that passing in INADDR_ANY does not create the same service | |
441 | * registration as IN6ADDR_ANY. The former advertises an RPC | |
442 | * service on any IPv4 address, but not on IPv6. The latter | |
443 | * advertises the service on all IPv4 and IPv6 addresses. | |
444 | */ | |
445 | int rpcb_v4_register(const u32 program, const u32 version, | |
14aeb211 | 446 | const struct sockaddr *address, const char *netid) |
c2e1b09f CL |
447 | { |
448 | struct rpcbind_args map = { | |
449 | .r_prog = program, | |
450 | .r_vers = version, | |
451 | .r_netid = netid, | |
452 | .r_owner = RPCB_OWNER_STRING, | |
453 | }; | |
454 | struct rpc_message msg = { | |
455 | .rpc_argp = &map, | |
c2e1b09f | 456 | }; |
c526611d CL |
457 | int error; |
458 | ||
459 | error = rpcb_create_local(); | |
460 | if (error) | |
461 | return error; | |
462 | if (rpcb_local_clnt4 == NULL) | |
463 | return -EPROTONOSUPPORT; | |
c2e1b09f | 464 | |
1673d0de CL |
465 | if (address == NULL) |
466 | return rpcb_unregister_all_protofamilies(&msg); | |
467 | ||
c2e1b09f CL |
468 | switch (address->sa_family) { |
469 | case AF_INET: | |
1673d0de | 470 | return rpcb_register_inet4(address, &msg); |
c2e1b09f | 471 | case AF_INET6: |
1673d0de | 472 | return rpcb_register_inet6(address, &msg); |
c2e1b09f CL |
473 | } |
474 | ||
475 | return -EAFNOSUPPORT; | |
476 | } | |
477 | ||
a509050b | 478 | /** |
cce63cd6 | 479 | * rpcb_getport_sync - obtain the port for an RPC service on a given host |
a509050b CL |
480 | * @sin: address of remote peer |
481 | * @prog: RPC program number to bind | |
482 | * @vers: RPC version number to bind | |
483 | * @prot: transport protocol to use to make this request | |
484 | * | |
67d60213 CL |
485 | * Return value is the requested advertised port number, |
486 | * or a negative errno value. | |
487 | * | |
a509050b | 488 | * Called from outside the RPC client in a synchronous task context. |
cce63cd6 | 489 | * Uses default timeout parameters specified by underlying transport. |
a509050b | 490 | * |
67d60213 | 491 | * XXX: Needs to support IPv6 |
a509050b | 492 | */ |
f1ec08cb | 493 | int rpcb_getport_sync(struct sockaddr_in *sin, u32 prog, u32 vers, int prot) |
a509050b CL |
494 | { |
495 | struct rpcbind_args map = { | |
496 | .r_prog = prog, | |
497 | .r_vers = vers, | |
498 | .r_prot = prot, | |
499 | .r_port = 0, | |
500 | }; | |
501 | struct rpc_message msg = { | |
502 | .rpc_proc = &rpcb_procedures2[RPCBPROC_GETPORT], | |
503 | .rpc_argp = &map, | |
c0c077df | 504 | .rpc_resp = &map, |
a509050b CL |
505 | }; |
506 | struct rpc_clnt *rpcb_clnt; | |
a509050b CL |
507 | int status; |
508 | ||
21454aaa HH |
509 | dprintk("RPC: %s(%pI4, %u, %u, %d)\n", |
510 | __func__, &sin->sin_addr.s_addr, prog, vers, prot); | |
a509050b | 511 | |
b91e101f | 512 | rpcb_clnt = rpcb_create(NULL, (struct sockaddr *)sin, |
423d8b06 | 513 | sizeof(*sin), prot, RPCBVERS_2); |
a509050b CL |
514 | if (IS_ERR(rpcb_clnt)) |
515 | return PTR_ERR(rpcb_clnt); | |
516 | ||
517 | status = rpc_call_sync(rpcb_clnt, &msg, 0); | |
90c5755f | 518 | rpc_shutdown_client(rpcb_clnt); |
a509050b CL |
519 | |
520 | if (status >= 0) { | |
521 | if (map.r_port != 0) | |
522 | return map.r_port; | |
523 | status = -EACCES; | |
524 | } | |
525 | return status; | |
526 | } | |
cce63cd6 | 527 | EXPORT_SYMBOL_GPL(rpcb_getport_sync); |
a509050b | 528 | |
803a9067 | 529 | static struct rpc_task *rpcb_call_async(struct rpc_clnt *rpcb_clnt, struct rpcbind_args *map, struct rpc_procinfo *proc) |
5138fde0 TM |
530 | { |
531 | struct rpc_message msg = { | |
803a9067 | 532 | .rpc_proc = proc, |
5138fde0 | 533 | .rpc_argp = map, |
c0c077df | 534 | .rpc_resp = map, |
5138fde0 TM |
535 | }; |
536 | struct rpc_task_setup task_setup_data = { | |
537 | .rpc_client = rpcb_clnt, | |
538 | .rpc_message = &msg, | |
539 | .callback_ops = &rpcb_getport_ops, | |
540 | .callback_data = map, | |
012da158 | 541 | .flags = RPC_TASK_ASYNC | RPC_TASK_SOFTCONN, |
5138fde0 TM |
542 | }; |
543 | ||
544 | return rpc_run_task(&task_setup_data); | |
545 | } | |
546 | ||
9a4bd29f TM |
547 | /* |
548 | * In the case where rpc clients have been cloned, we want to make | |
549 | * sure that we use the program number/version etc of the actual | |
550 | * owner of the xprt. To do so, we walk back up the tree of parents | |
551 | * to find whoever created the transport and/or whoever has the | |
552 | * autobind flag set. | |
553 | */ | |
554 | static struct rpc_clnt *rpcb_find_transport_owner(struct rpc_clnt *clnt) | |
555 | { | |
556 | struct rpc_clnt *parent = clnt->cl_parent; | |
557 | ||
558 | while (parent != clnt) { | |
559 | if (parent->cl_xprt != clnt->cl_xprt) | |
560 | break; | |
561 | if (clnt->cl_autobind) | |
562 | break; | |
563 | clnt = parent; | |
564 | parent = parent->cl_parent; | |
565 | } | |
566 | return clnt; | |
567 | } | |
568 | ||
a509050b | 569 | /** |
45160d62 | 570 | * rpcb_getport_async - obtain the port for a given RPC service on a given host |
a509050b CL |
571 | * @task: task that is waiting for portmapper request |
572 | * | |
573 | * This one can be called for an ongoing RPC request, and can be used in | |
574 | * an async (rpciod) context. | |
575 | */ | |
45160d62 | 576 | void rpcb_getport_async(struct rpc_task *task) |
a509050b | 577 | { |
9a4bd29f | 578 | struct rpc_clnt *clnt; |
803a9067 | 579 | struct rpc_procinfo *proc; |
0a48f5d7 | 580 | u32 bind_version; |
9a4bd29f | 581 | struct rpc_xprt *xprt; |
a509050b CL |
582 | struct rpc_clnt *rpcb_clnt; |
583 | static struct rpcbind_args *map; | |
584 | struct rpc_task *child; | |
9f6ad26d CL |
585 | struct sockaddr_storage addr; |
586 | struct sockaddr *sap = (struct sockaddr *)&addr; | |
587 | size_t salen; | |
a509050b CL |
588 | int status; |
589 | ||
9a4bd29f TM |
590 | clnt = rpcb_find_transport_owner(task->tk_client); |
591 | xprt = clnt->cl_xprt; | |
592 | ||
45160d62 | 593 | dprintk("RPC: %5u %s(%s, %u, %u, %d)\n", |
0dc47877 | 594 | task->tk_pid, __func__, |
45160d62 | 595 | clnt->cl_server, clnt->cl_prog, clnt->cl_vers, xprt->prot); |
a509050b | 596 | |
381ba74a TM |
597 | /* Put self on the wait queue to ensure we get notified if |
598 | * some other task is already attempting to bind the port */ | |
599 | rpc_sleep_on(&xprt->binding, task, NULL); | |
600 | ||
a509050b | 601 | if (xprt_test_and_set_binding(xprt)) { |
45160d62 | 602 | dprintk("RPC: %5u %s: waiting for another binder\n", |
0dc47877 | 603 | task->tk_pid, __func__); |
381ba74a | 604 | return; |
a509050b CL |
605 | } |
606 | ||
a509050b CL |
607 | /* Someone else may have bound if we slept */ |
608 | if (xprt_bound(xprt)) { | |
609 | status = 0; | |
45160d62 | 610 | dprintk("RPC: %5u %s: already bound\n", |
0dc47877 | 611 | task->tk_pid, __func__); |
a509050b CL |
612 | goto bailout_nofree; |
613 | } | |
614 | ||
ba809130 | 615 | /* Parent transport's destination address */ |
9f6ad26d | 616 | salen = rpc_peeraddr(clnt, sap, sizeof(addr)); |
d5b64430 CL |
617 | |
618 | /* Don't ever use rpcbind v2 for AF_INET6 requests */ | |
9f6ad26d | 619 | switch (sap->sa_family) { |
d5b64430 | 620 | case AF_INET: |
803a9067 TM |
621 | proc = rpcb_next_version[xprt->bind_index].rpc_proc; |
622 | bind_version = rpcb_next_version[xprt->bind_index].rpc_vers; | |
d5b64430 CL |
623 | break; |
624 | case AF_INET6: | |
803a9067 TM |
625 | proc = rpcb_next_version6[xprt->bind_index].rpc_proc; |
626 | bind_version = rpcb_next_version6[xprt->bind_index].rpc_vers; | |
d5b64430 CL |
627 | break; |
628 | default: | |
629 | status = -EAFNOSUPPORT; | |
630 | dprintk("RPC: %5u %s: bad address family\n", | |
0dc47877 | 631 | task->tk_pid, __func__); |
d5b64430 CL |
632 | goto bailout_nofree; |
633 | } | |
803a9067 | 634 | if (proc == NULL) { |
a509050b | 635 | xprt->bind_index = 0; |
906462af | 636 | status = -EPFNOSUPPORT; |
45160d62 | 637 | dprintk("RPC: %5u %s: no more getport versions available\n", |
0dc47877 | 638 | task->tk_pid, __func__); |
a509050b CL |
639 | goto bailout_nofree; |
640 | } | |
a509050b | 641 | |
45160d62 | 642 | dprintk("RPC: %5u %s: trying rpcbind version %u\n", |
0dc47877 | 643 | task->tk_pid, __func__, bind_version); |
a509050b | 644 | |
9f6ad26d | 645 | rpcb_clnt = rpcb_create(clnt->cl_server, sap, salen, xprt->prot, |
423d8b06 | 646 | bind_version); |
143b6c40 CL |
647 | if (IS_ERR(rpcb_clnt)) { |
648 | status = PTR_ERR(rpcb_clnt); | |
649 | dprintk("RPC: %5u %s: rpcb_create failed, error %ld\n", | |
0dc47877 | 650 | task->tk_pid, __func__, PTR_ERR(rpcb_clnt)); |
143b6c40 CL |
651 | goto bailout_nofree; |
652 | } | |
653 | ||
a509050b CL |
654 | map = kzalloc(sizeof(struct rpcbind_args), GFP_ATOMIC); |
655 | if (!map) { | |
656 | status = -ENOMEM; | |
45160d62 | 657 | dprintk("RPC: %5u %s: no memory available\n", |
0dc47877 | 658 | task->tk_pid, __func__); |
96165e2b | 659 | goto bailout_release_client; |
a509050b CL |
660 | } |
661 | map->r_prog = clnt->cl_prog; | |
662 | map->r_vers = clnt->cl_vers; | |
663 | map->r_prot = xprt->prot; | |
664 | map->r_port = 0; | |
665 | map->r_xprt = xprt_get(xprt); | |
381ba74a | 666 | map->r_status = -EIO; |
a509050b | 667 | |
ba809130 CL |
668 | switch (bind_version) { |
669 | case RPCBVERS_4: | |
670 | case RPCBVERS_3: | |
671 | map->r_netid = rpc_peeraddr2str(clnt, RPC_DISPLAY_NETID); | |
672 | map->r_addr = rpc_sockaddr2uaddr(sap); | |
673 | map->r_owner = ""; | |
674 | break; | |
675 | case RPCBVERS_2: | |
676 | map->r_addr = NULL; | |
677 | break; | |
678 | default: | |
679 | BUG(); | |
680 | } | |
681 | ||
803a9067 | 682 | child = rpcb_call_async(rpcb_clnt, map, proc); |
4c402b40 | 683 | rpc_release_client(rpcb_clnt); |
a509050b | 684 | if (IS_ERR(child)) { |
0d3a34b4 | 685 | /* rpcb_map_release() has freed the arguments */ |
45160d62 | 686 | dprintk("RPC: %5u %s: rpc_run_task failed\n", |
0dc47877 | 687 | task->tk_pid, __func__); |
381ba74a | 688 | return; |
a509050b | 689 | } |
a509050b | 690 | |
9a4bd29f TM |
691 | xprt->stat.bind_count++; |
692 | rpc_put_task(child); | |
a509050b CL |
693 | return; |
694 | ||
96165e2b TM |
695 | bailout_release_client: |
696 | rpc_release_client(rpcb_clnt); | |
a509050b CL |
697 | bailout_nofree: |
698 | rpcb_wake_rpcbind_waiters(xprt, status); | |
a509050b CL |
699 | task->tk_status = status; |
700 | } | |
12444809 | 701 | EXPORT_SYMBOL_GPL(rpcb_getport_async); |
a509050b CL |
702 | |
703 | /* | |
704 | * Rpcbind child task calls this callback via tk_exit. | |
705 | */ | |
706 | static void rpcb_getport_done(struct rpc_task *child, void *data) | |
707 | { | |
708 | struct rpcbind_args *map = data; | |
709 | struct rpc_xprt *xprt = map->r_xprt; | |
710 | int status = child->tk_status; | |
711 | ||
4784cb51 CL |
712 | /* Garbage reply: retry with a lesser rpcbind version */ |
713 | if (status == -EIO) | |
714 | status = -EPROTONOSUPPORT; | |
715 | ||
a509050b CL |
716 | /* rpcbind server doesn't support this rpcbind protocol version */ |
717 | if (status == -EPROTONOSUPPORT) | |
718 | xprt->bind_index++; | |
719 | ||
720 | if (status < 0) { | |
721 | /* rpcbind server not available on remote host? */ | |
722 | xprt->ops->set_port(xprt, 0); | |
723 | } else if (map->r_port == 0) { | |
724 | /* Requested RPC service wasn't registered on remote host */ | |
725 | xprt->ops->set_port(xprt, 0); | |
726 | status = -EACCES; | |
727 | } else { | |
728 | /* Succeeded */ | |
729 | xprt->ops->set_port(xprt, map->r_port); | |
730 | xprt_set_bound(xprt); | |
731 | status = 0; | |
732 | } | |
733 | ||
734 | dprintk("RPC: %5u rpcb_getport_done(status %d, port %u)\n", | |
735 | child->tk_pid, status, map->r_port); | |
736 | ||
381ba74a | 737 | map->r_status = status; |
a509050b CL |
738 | } |
739 | ||
166b88d7 CL |
740 | /* |
741 | * XDR functions for rpcbind | |
742 | */ | |
743 | ||
6f2c2db7 CL |
744 | static int rpcb_enc_mapping(struct rpc_rqst *req, __be32 *p, |
745 | const struct rpcbind_args *rpcb) | |
746 | { | |
747 | struct rpc_task *task = req->rq_task; | |
748 | struct xdr_stream xdr; | |
749 | ||
750 | dprintk("RPC: %5u encoding PMAP_%s call (%u, %u, %d, %u)\n", | |
751 | task->tk_pid, task->tk_msg.rpc_proc->p_name, | |
752 | rpcb->r_prog, rpcb->r_vers, rpcb->r_prot, rpcb->r_port); | |
753 | ||
754 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
755 | ||
756 | p = xdr_reserve_space(&xdr, sizeof(__be32) * RPCB_mappingargs_sz); | |
757 | if (unlikely(p == NULL)) | |
758 | return -EIO; | |
759 | ||
760 | *p++ = htonl(rpcb->r_prog); | |
761 | *p++ = htonl(rpcb->r_vers); | |
762 | *p++ = htonl(rpcb->r_prot); | |
763 | *p = htonl(rpcb->r_port); | |
764 | ||
765 | return 0; | |
766 | } | |
767 | ||
c0c077df CL |
768 | static int rpcb_dec_getport(struct rpc_rqst *req, __be32 *p, |
769 | struct rpcbind_args *rpcb) | |
770 | { | |
771 | struct rpc_task *task = req->rq_task; | |
772 | struct xdr_stream xdr; | |
773 | unsigned long port; | |
774 | ||
775 | xdr_init_decode(&xdr, &req->rq_rcv_buf, p); | |
776 | ||
777 | rpcb->r_port = 0; | |
778 | ||
779 | p = xdr_inline_decode(&xdr, sizeof(__be32)); | |
780 | if (unlikely(p == NULL)) | |
781 | return -EIO; | |
782 | ||
783 | port = ntohl(*p); | |
784 | dprintk("RPC: %5u PMAP_%s result: %lu\n", task->tk_pid, | |
785 | task->tk_msg.rpc_proc->p_name, port); | |
4be929be | 786 | if (unlikely(port > USHRT_MAX)) |
c0c077df CL |
787 | return -EIO; |
788 | ||
789 | rpcb->r_port = port; | |
790 | return 0; | |
791 | } | |
792 | ||
7ed0ff98 CL |
793 | static int rpcb_dec_set(struct rpc_rqst *req, __be32 *p, |
794 | unsigned int *boolp) | |
795 | { | |
796 | struct rpc_task *task = req->rq_task; | |
797 | struct xdr_stream xdr; | |
798 | ||
799 | xdr_init_decode(&xdr, &req->rq_rcv_buf, p); | |
800 | ||
801 | p = xdr_inline_decode(&xdr, sizeof(__be32)); | |
802 | if (unlikely(p == NULL)) | |
803 | return -EIO; | |
804 | ||
805 | *boolp = 0; | |
806 | if (*p) | |
807 | *boolp = 1; | |
808 | ||
809 | dprintk("RPC: %5u RPCB_%s call %s\n", | |
810 | task->tk_pid, task->tk_msg.rpc_proc->p_name, | |
811 | (*boolp ? "succeeded" : "failed")); | |
812 | return 0; | |
813 | } | |
814 | ||
6f2c2db7 CL |
815 | static int encode_rpcb_string(struct xdr_stream *xdr, const char *string, |
816 | const u32 maxstrlen) | |
817 | { | |
818 | u32 len; | |
819 | __be32 *p; | |
820 | ||
821 | if (unlikely(string == NULL)) | |
822 | return -EIO; | |
823 | len = strlen(string); | |
824 | if (unlikely(len > maxstrlen)) | |
825 | return -EIO; | |
826 | ||
827 | p = xdr_reserve_space(xdr, sizeof(__be32) + len); | |
828 | if (unlikely(p == NULL)) | |
829 | return -EIO; | |
830 | xdr_encode_opaque(p, string, len); | |
831 | ||
832 | return 0; | |
833 | } | |
834 | ||
835 | static int rpcb_enc_getaddr(struct rpc_rqst *req, __be32 *p, | |
836 | const struct rpcbind_args *rpcb) | |
837 | { | |
838 | struct rpc_task *task = req->rq_task; | |
839 | struct xdr_stream xdr; | |
840 | ||
841 | dprintk("RPC: %5u encoding RPCB_%s call (%u, %u, '%s', '%s')\n", | |
842 | task->tk_pid, task->tk_msg.rpc_proc->p_name, | |
843 | rpcb->r_prog, rpcb->r_vers, | |
844 | rpcb->r_netid, rpcb->r_addr); | |
845 | ||
846 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
847 | ||
848 | p = xdr_reserve_space(&xdr, | |
849 | sizeof(__be32) * (RPCB_program_sz + RPCB_version_sz)); | |
850 | if (unlikely(p == NULL)) | |
851 | return -EIO; | |
852 | *p++ = htonl(rpcb->r_prog); | |
853 | *p = htonl(rpcb->r_vers); | |
854 | ||
855 | if (encode_rpcb_string(&xdr, rpcb->r_netid, RPCBIND_MAXNETIDLEN)) | |
856 | return -EIO; | |
857 | if (encode_rpcb_string(&xdr, rpcb->r_addr, RPCBIND_MAXUADDRLEN)) | |
858 | return -EIO; | |
859 | if (encode_rpcb_string(&xdr, rpcb->r_owner, RPCB_MAXOWNERLEN)) | |
860 | return -EIO; | |
861 | ||
862 | return 0; | |
863 | } | |
864 | ||
c0c077df CL |
865 | static int rpcb_dec_getaddr(struct rpc_rqst *req, __be32 *p, |
866 | struct rpcbind_args *rpcb) | |
867 | { | |
868 | struct sockaddr_storage address; | |
869 | struct sockaddr *sap = (struct sockaddr *)&address; | |
870 | struct rpc_task *task = req->rq_task; | |
871 | struct xdr_stream xdr; | |
872 | u32 len; | |
873 | ||
874 | rpcb->r_port = 0; | |
875 | ||
876 | xdr_init_decode(&xdr, &req->rq_rcv_buf, p); | |
877 | ||
878 | p = xdr_inline_decode(&xdr, sizeof(__be32)); | |
879 | if (unlikely(p == NULL)) | |
880 | goto out_fail; | |
881 | len = ntohl(*p); | |
882 | ||
883 | /* | |
884 | * If the returned universal address is a null string, | |
885 | * the requested RPC service was not registered. | |
886 | */ | |
887 | if (len == 0) { | |
888 | dprintk("RPC: %5u RPCB reply: program not registered\n", | |
889 | task->tk_pid); | |
890 | return 0; | |
891 | } | |
892 | ||
893 | if (unlikely(len > RPCBIND_MAXUADDRLEN)) | |
894 | goto out_fail; | |
895 | ||
896 | p = xdr_inline_decode(&xdr, len); | |
897 | if (unlikely(p == NULL)) | |
898 | goto out_fail; | |
899 | dprintk("RPC: %5u RPCB_%s reply: %s\n", task->tk_pid, | |
900 | task->tk_msg.rpc_proc->p_name, (char *)p); | |
901 | ||
902 | if (rpc_uaddr2sockaddr((char *)p, len, sap, sizeof(address)) == 0) | |
903 | goto out_fail; | |
904 | rpcb->r_port = rpc_get_port(sap); | |
905 | ||
906 | return 0; | |
907 | ||
908 | out_fail: | |
909 | dprintk("RPC: %5u malformed RPCB_%s reply\n", | |
910 | task->tk_pid, task->tk_msg.rpc_proc->p_name); | |
911 | return -EIO; | |
912 | } | |
913 | ||
a509050b CL |
914 | /* |
915 | * Not all rpcbind procedures described in RFC 1833 are implemented | |
916 | * since the Linux kernel RPC code requires only these. | |
917 | */ | |
f8b761ef | 918 | |
a509050b | 919 | static struct rpc_procinfo rpcb_procedures2[] = { |
f8b761ef CL |
920 | [RPCBPROC_SET] = { |
921 | .p_proc = RPCBPROC_SET, | |
922 | .p_encode = (kxdrproc_t)rpcb_enc_mapping, | |
923 | .p_decode = (kxdrproc_t)rpcb_dec_set, | |
924 | .p_arglen = RPCB_mappingargs_sz, | |
925 | .p_replen = RPCB_setres_sz, | |
926 | .p_statidx = RPCBPROC_SET, | |
927 | .p_timer = 0, | |
928 | .p_name = "SET", | |
929 | }, | |
930 | [RPCBPROC_UNSET] = { | |
931 | .p_proc = RPCBPROC_UNSET, | |
932 | .p_encode = (kxdrproc_t)rpcb_enc_mapping, | |
933 | .p_decode = (kxdrproc_t)rpcb_dec_set, | |
934 | .p_arglen = RPCB_mappingargs_sz, | |
935 | .p_replen = RPCB_setres_sz, | |
936 | .p_statidx = RPCBPROC_UNSET, | |
937 | .p_timer = 0, | |
938 | .p_name = "UNSET", | |
939 | }, | |
940 | [RPCBPROC_GETPORT] = { | |
941 | .p_proc = RPCBPROC_GETPORT, | |
942 | .p_encode = (kxdrproc_t)rpcb_enc_mapping, | |
943 | .p_decode = (kxdrproc_t)rpcb_dec_getport, | |
944 | .p_arglen = RPCB_mappingargs_sz, | |
945 | .p_replen = RPCB_getportres_sz, | |
946 | .p_statidx = RPCBPROC_GETPORT, | |
947 | .p_timer = 0, | |
948 | .p_name = "GETPORT", | |
949 | }, | |
a509050b CL |
950 | }; |
951 | ||
952 | static struct rpc_procinfo rpcb_procedures3[] = { | |
f8b761ef CL |
953 | [RPCBPROC_SET] = { |
954 | .p_proc = RPCBPROC_SET, | |
955 | .p_encode = (kxdrproc_t)rpcb_enc_getaddr, | |
956 | .p_decode = (kxdrproc_t)rpcb_dec_set, | |
957 | .p_arglen = RPCB_getaddrargs_sz, | |
958 | .p_replen = RPCB_setres_sz, | |
959 | .p_statidx = RPCBPROC_SET, | |
960 | .p_timer = 0, | |
961 | .p_name = "SET", | |
962 | }, | |
963 | [RPCBPROC_UNSET] = { | |
964 | .p_proc = RPCBPROC_UNSET, | |
965 | .p_encode = (kxdrproc_t)rpcb_enc_getaddr, | |
966 | .p_decode = (kxdrproc_t)rpcb_dec_set, | |
967 | .p_arglen = RPCB_getaddrargs_sz, | |
968 | .p_replen = RPCB_setres_sz, | |
969 | .p_statidx = RPCBPROC_UNSET, | |
970 | .p_timer = 0, | |
971 | .p_name = "UNSET", | |
972 | }, | |
973 | [RPCBPROC_GETADDR] = { | |
974 | .p_proc = RPCBPROC_GETADDR, | |
975 | .p_encode = (kxdrproc_t)rpcb_enc_getaddr, | |
976 | .p_decode = (kxdrproc_t)rpcb_dec_getaddr, | |
977 | .p_arglen = RPCB_getaddrargs_sz, | |
978 | .p_replen = RPCB_getaddrres_sz, | |
979 | .p_statidx = RPCBPROC_GETADDR, | |
980 | .p_timer = 0, | |
981 | .p_name = "GETADDR", | |
982 | }, | |
a509050b CL |
983 | }; |
984 | ||
985 | static struct rpc_procinfo rpcb_procedures4[] = { | |
f8b761ef CL |
986 | [RPCBPROC_SET] = { |
987 | .p_proc = RPCBPROC_SET, | |
988 | .p_encode = (kxdrproc_t)rpcb_enc_getaddr, | |
989 | .p_decode = (kxdrproc_t)rpcb_dec_set, | |
990 | .p_arglen = RPCB_getaddrargs_sz, | |
991 | .p_replen = RPCB_setres_sz, | |
992 | .p_statidx = RPCBPROC_SET, | |
993 | .p_timer = 0, | |
994 | .p_name = "SET", | |
995 | }, | |
996 | [RPCBPROC_UNSET] = { | |
997 | .p_proc = RPCBPROC_UNSET, | |
998 | .p_encode = (kxdrproc_t)rpcb_enc_getaddr, | |
999 | .p_decode = (kxdrproc_t)rpcb_dec_set, | |
1000 | .p_arglen = RPCB_getaddrargs_sz, | |
1001 | .p_replen = RPCB_setres_sz, | |
1002 | .p_statidx = RPCBPROC_UNSET, | |
1003 | .p_timer = 0, | |
1004 | .p_name = "UNSET", | |
1005 | }, | |
1006 | [RPCBPROC_GETADDR] = { | |
1007 | .p_proc = RPCBPROC_GETADDR, | |
1008 | .p_encode = (kxdrproc_t)rpcb_enc_getaddr, | |
1009 | .p_decode = (kxdrproc_t)rpcb_dec_getaddr, | |
1010 | .p_arglen = RPCB_getaddrargs_sz, | |
1011 | .p_replen = RPCB_getaddrres_sz, | |
1012 | .p_statidx = RPCBPROC_GETADDR, | |
1013 | .p_timer = 0, | |
1014 | .p_name = "GETADDR", | |
1015 | }, | |
a509050b CL |
1016 | }; |
1017 | ||
1018 | static struct rpcb_info rpcb_next_version[] = { | |
fc200e79 CL |
1019 | { |
1020 | .rpc_vers = RPCBVERS_2, | |
1021 | .rpc_proc = &rpcb_procedures2[RPCBPROC_GETPORT], | |
1022 | }, | |
1023 | { | |
1024 | .rpc_proc = NULL, | |
1025 | }, | |
a509050b CL |
1026 | }; |
1027 | ||
d5b64430 | 1028 | static struct rpcb_info rpcb_next_version6[] = { |
fc200e79 CL |
1029 | { |
1030 | .rpc_vers = RPCBVERS_4, | |
8842413a | 1031 | .rpc_proc = &rpcb_procedures4[RPCBPROC_GETADDR], |
fc200e79 CL |
1032 | }, |
1033 | { | |
1034 | .rpc_vers = RPCBVERS_3, | |
1035 | .rpc_proc = &rpcb_procedures3[RPCBPROC_GETADDR], | |
1036 | }, | |
fc200e79 CL |
1037 | { |
1038 | .rpc_proc = NULL, | |
1039 | }, | |
d5b64430 CL |
1040 | }; |
1041 | ||
a509050b | 1042 | static struct rpc_version rpcb_version2 = { |
fc200e79 | 1043 | .number = RPCBVERS_2, |
a509050b CL |
1044 | .nrprocs = RPCB_HIGHPROC_2, |
1045 | .procs = rpcb_procedures2 | |
1046 | }; | |
1047 | ||
1048 | static struct rpc_version rpcb_version3 = { | |
fc200e79 | 1049 | .number = RPCBVERS_3, |
a509050b CL |
1050 | .nrprocs = RPCB_HIGHPROC_3, |
1051 | .procs = rpcb_procedures3 | |
1052 | }; | |
1053 | ||
1054 | static struct rpc_version rpcb_version4 = { | |
fc200e79 | 1055 | .number = RPCBVERS_4, |
a509050b CL |
1056 | .nrprocs = RPCB_HIGHPROC_4, |
1057 | .procs = rpcb_procedures4 | |
1058 | }; | |
1059 | ||
1060 | static struct rpc_version *rpcb_version[] = { | |
1061 | NULL, | |
1062 | NULL, | |
1063 | &rpcb_version2, | |
1064 | &rpcb_version3, | |
1065 | &rpcb_version4 | |
1066 | }; | |
1067 | ||
1068 | static struct rpc_stat rpcb_stats; | |
1069 | ||
7f4adeff | 1070 | static struct rpc_program rpcb_program = { |
a509050b CL |
1071 | .name = "rpcbind", |
1072 | .number = RPCBIND_PROGRAM, | |
1073 | .nrvers = ARRAY_SIZE(rpcb_version), | |
1074 | .version = rpcb_version, | |
1075 | .stats = &rpcb_stats, | |
1076 | }; | |
c526611d CL |
1077 | |
1078 | /** | |
1079 | * cleanup_rpcb_clnt - remove xprtsock's sysctls, unregister | |
1080 | * | |
1081 | */ | |
1082 | void cleanup_rpcb_clnt(void) | |
1083 | { | |
1084 | if (rpcb_local_clnt4) | |
1085 | rpc_shutdown_client(rpcb_local_clnt4); | |
1086 | if (rpcb_local_clnt) | |
1087 | rpc_shutdown_client(rpcb_local_clnt); | |
1088 | } |